No problem, we've got 4021 and 1574 to multiply
4021 × 1574 = 1574 × (4021)
+ 1574 × 1 which equals 1574
+ 1574 × 20 that results in 31480
+ 1574 × 000 that results in 0
+ 1574 × 4000 that equals 6296000

= 6329054
